Wildfires on Arctic tundra can contribute to widespread permafrost thaw much like blazes in forested areas, according to a study published in the most recent issue of the online journal Scientific Reports. From: phys.org
GR: The real concern here is that the fires are growing larger than in the past. Methane released by melting permafrost, coupled with increasing green-house gasses from deforestation, farming, and energy production, may accelerate the rate of forecast climate change.